Activation often requires a "handshake" with a server. If the developer has retired that version's activation server, the key may no longer validate.
Are you using a specific that requires version 2.0.0, or are you open to trying a newer emulator ? youwave android 200 activation key fix
, which offer better performance and do not require activation keys for standard use. modern Android emulators that might be more reliable for your current hardware? Activation often requires a "handshake" with a server